Re: [FAQ] Why don't my expansion packs transfer between platforms?

I know this isn't ideal, but you might check out EA Play Pro. It looks like you would have access to Sims 4 and a couple of packs from what I can see. But only a few, definitely not all. I was hoping when I thought of it that there would be more. I'm sorry I couldn't find more for you. I know it does not help right now, but a few times a year EA gives deep discounts on purchasing. If you take advantage of those you can save a boatload off full cost. And it isn't too awful long until Black Friday and Cyber Monday. 

They don't switch over. You have to buy them again.